rman copy datafile to raw

ORACLE VERSION:10203

SQL> select * from v$version;

BANNER
----------------------------------------------------------------
Oracle Database 10g Enterprise Edition Release 10.2.0.3.0 - Prod
PL/SQL Release 10.2.0.3.0 - Production
CORE    10.2.0.3.0      Production
TNS for Linux: Version 10.2.0.3.0 - Production
NLSRTL Version 10.2.0.3.0 - Production

OS VERSION:LINUX 2.6.18-53.el5PAE #1 SMP
[root@mcprod ~]# uname -a
Linux mcprod 2.6.18-53.el5PAE #1 SMP Mon Nov 12 02:55:09 EST 2007 i686 i686 i386 GNU/Linux

[ora10g@mcprod ~]$ rman target / nocatalog

Recovery Manager: Release 10.2.0.3.0 - Production on Mon Jun 15 19:30:11 2009

Copyright (c) 1982, 2005, Oracle.  All rights reserved.

connected to target database: MCTEST (DBID=736228955)
using target database control file instead of recovery catalog

RMAN>  copy datafile 3 to '/dev/raw/raw1';

Starting backup at 15-JUN-09
using channel ORA_DISK_1
channel ORA_DISK_1: starting datafile copy
input datafile fno=00003 name=/oradata/mctest/sysaux01.dbf
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-03009: failure of backup command on ORA_DISK_1 channel at 06/15/2009 19:32:26
ORA-19504: failed to create file "/dev/raw/raw1"
ORA-27041: unable to open file
Linux Error: 16: Device or resource busy
Additional information: 1

用ddcopy测试
[root@mcprod raw]# dd if=/dev/zero of=/dev/raw/raw1 bs=1024 count=100

dd: opening `/dev/raw/raw1': Device or resource busy
[root@mcprod raw]# blockdev --getsize /dev/raw/raw1
/dev/raw/raw1: Device or resource busy

报“Device or resource busy”可以肯定的是创建raw设备时，出现问题。

解决办法：
1。将redhet4上的/usr/bin/raw,/etc/sysconfig/rawdevices,/etc/init.d/rawdevices这三个文件复制到centos5相应的目录下。注意其权限
[root@mctest bin]# ls -rlt /usr/bin/raw
-rwxr-xr-x  1 root root 5656 Jul 27  2005 /usr/bin/raw
[root@mctest bin]# ls -rlt /etc/init.d/rawdevices
-rwxr-xr-x  1 root root 2404 Oct 19  2004 /etc/init.d/rawdevices
[root@mctest bin]# ls -lrt /etc/sysconfig/rawdevices
-rw-r--r--  1 root root 287 Oct 19  2004 /etc/sysconfig/rawdevices
2。配置/etc/init.d/rawdevices文件
3。重启相关服务
[root@mcprod raw]# /etc/init.d/rawdevices restart
Assigning devices:
           /dev/raw/raw5  -->   /dev/hda15
/dev/raw/raw5:  bound to major 3, minor 15
done
[root@mcprod raw]# /sbin/chkconfig rawdevices on
[root@mcprod raw]# reboot

未完待续